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A hotel is in the shape of a  cylinder, with a circular foundation. The circumference of the foundation is

2 times the radius, increased by 273.92 ft. Find the radius of the circular foundation. Use 3.14 as an approximation for piπ.

 

The radius of the foundation is approximately ____ ft. ft2.ft3.

 Dec 5, 2017
 #1
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C  =  2*radius  + 273.92       (1)

 

C  =  2 * 3.14 * radius   =  6.28* radius   (2)

 

Set  (1)  = (2)    and we have that

 

2r + 273.92  =    6.28r        subtract  2r  from both sides

 

273.92  =  4.28r      divide both sides by 4.28 

 

273.92 / 4.28  =   r   =  64 ft

 

 

cool cool cool

 Dec 5, 2017

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